Thrust bearing for disk cultivators



NOV.' l2, 1935. w E G OBL-E THRUST BEARING FOR vDISK CULTIVATORS Filed March` '7, 1955 .L nventor Gttorneg I Patented Nov. 12, 193s V UNITED STATES PATENT OFFICE THBUS'I BEARING FOR. DISK CULTIVATORS William E. Goble, Selma, Calif. Application March 7, 19325, Serial No. 9,771 2 Claims. (Cl. 974-220) My invention relates to a thrust bearing for a disk cultivator, and morespecically itis adapted forluse in conjunction with the form of disk and the bearings therein disclosed in Patent No. 1,932,-

5 619, dated October 31, 1933, for Bearing for earth working tool heretofore issued to me. The object I have accomplished is the formation of a in the patent above referredl to. Other objects.

will be hereinafter disclosed.

These objects are accomplished by means of V the device hereinafter described and illustrated '20 on the accompanying drawing, in which Fig. 1

is a longitudinal sectional view of a section of a disk cultivator showing the thrust bearing in section.

Fig. 2 isa top view of a four disk section of a 2a disk cultivator.

Fig. 3 is a cross sectional view of the device along the sectional line 3-3 in Fig. l.

Fig. 4 is a cross sectional view of the device along sectional line t-II in Fig. 1. 30 Fig. 5 is a retaining ring. Fig. 6 is a lock washer.

Fig. 'I shows the squared end of the axle. Referring to the drawing, I have constructed a frame III having sides, ends and braces. In form 35 it may be a parallelograrn, a rhomboid, or such other shape -as may conform to the use to which l '40 sists of a plurality of disks I1, which are uni.

formly spaced apart with spools I3. Each of the disks has a hole I2 through the disk concentric with the diskA through which hole a tube Ill can pass.V This tube has anstop I5 attached to one 45 end, or adjacent to an end, and the spools have a longitudinal hole therethrough of suflicient d1- ameter to slide on tube III. One disc is placed on tube I4 adjacent to the stop I 5, and spools and disks are then threaded alternately on the tube 50 to the number desired, and the assembly of tube, disk blades and spools are clamped together by means of a nut I6 on the endof the tube opposite to stop I5. Within the tube, and between the ends thereof, but preferably near the longi- 55 tudinal center of the tube, I have attached a thrust-block I9. As shown in Fig. 3 the thrust block is tubular in form.

The axle on which the disk and tube assembly rotates consists ,of two parts, designated as 9 and 9a. 'I'hese two axle parts are joined together 5 by a stud 20. The ends of the axle parts 9 and 9a connected by the stud have thrust bearings 2| and 2I attached thereto. These thrust bearings can be formed integral with the portions of the axle to which they are attached, or they can l be welded. In my construction I nd the cheaper plain is to'weld the bearings to the shaft. It

is noted that the stud 20 should be of such length that the thrust bearings 2I and 2Ia can closely approach the thrust block I9, and the stud should l preferably be of less diameter than the axle. It

is also noted that the axle is hollow and the stud has a lead 26 therethrough to carry lubricating oil tothe parts to be oiled.

The bearings on which the disk assembly rotates consists of 'sleeve bearings 23 and 23a which fit between the axle and tube Id. These are held in position by means of stop blocks 24 and 24m attached to the axle, and packing 25 and 25a at the'opposite end. At the one end the packing 25 is held i'n by a retaining ring 4l, also shown as Fig. 5, and at the other end by a cap 40 -which also served as a lock nut for nut I6. v The assembly is held in frame III by means of cap screws and 3l. It will be noted that 30 cap screw 3l has a lead 29 therethrough and an oil cup 32 thereon to pass lubricating oil into the axle, and oil holes 2G, 2l and 28 are formed through the axle to'the bearings to be lubricated. The axle is attached rigidly to the frame by being squared at one end as shown in Fig. 7, and by the use of a lock washer I6 having a square hole B5 therein which fits over the squared end of the axle and having a flange III thereon which engages with the frame. 40 Having described my invention I claim as new and ask for Letters Patent:

l 1. In a thrust bearing for a disk cultivator having a tubular member adapted to carry the disk blades, a thrust blocky attached to the interior gage saidthrust bearings. A 55 2. In a. disk cultivator having the disk blades Y attached to a'hollow tube and a iixed axle around `which the assembly of tube and disk blades are adapted to rotate, a thrust bearing assembly coml prising a thrust block attached to the inside of the tube. an axle constructed in two sections attached together by screw means, thrust bearings attached to each of said sections of the axle. said screw holding the sections of the axle together being adapted to hold the thrust Delfina in a spaced relation with the thrust block. v

' WILLIAM l. GOBLI. 

